I know UnRAID is designed as a home server but it has grown past that at this point. I'd love to see an easy way to implement this in the GUI. TrueNAS core has this feature and it also have LDAP support that can work with an LDAP server or event a LDAP as a Service, i.e, Jumpcloud.
I am really looking forward to some sort of Group feature and LDAP! PLEASE LDAP!!!!!
Anyway, that's my $0.02